Safety trolley wire holder



March 6, A GULLA 1:949;833

SAFETY TROLLEY WIRE HOLDER Filed April 20, 1933 2 Sheets-Sheet l lnvenfor jkwizdei {zzZZa M f1 Ilorncy March 6, 1934. A. GULLA SAFETY TROLLEY WIRE HOLDER Filed April 20, 1933 2 Sheets-Sheet 2 omey By QM Patented Mar. 6, 1934 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to an electric holder.

One of the primary objects of the invention is to devise a trolley feed wire holder formed in two sections one of which may be easily detached from the other and discarded when worn out.

Another object of the invention is to provide a trolley wire holder that gives perfect balance in the assembled relation and which is easily assembled or disassembled by a lineman.

Further objects of the invention are to provide a wire holder of the character described that is strong, compact and durable, thoroughly reliable for its intended purpose and that is comparatively inexpensive to manufacture, install and replace the worn parts.

With the foregoing and other objects in view, the invention consists of a novel construction, combination and arrangement of parts as will be more specifically described and illustrated in the accompanying specification and drawings, wherein for the purpose of illustration is shown the preferred embodiment of the invention.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:-

Figure 1 is a side elevation of the wire holder of the present invention in the assembled relation.

Figure 2 is a top plan view thereof.

Figure 3 is a. top plan view of the lower clamping members.

Figure 4 is a detailed vertical section through the holder of the present invention in the assembled relation.

Figure 5 is a detailed vertical section taken substantially on the line 55 of Figure 4.

Figure 6 is a vertical section taken substantially on line 66 of Figure 4.

Figure '7 is an enlarged fragmentary side elevation of one end of the lower clamping member,

and

Figure 8 is a detailed horizontal section taken substantially on line 88 of Figure 4.

Referring to the drawings in detail, the electrical conductor wire holder of the present invention is formed of an elongated rod-like upper clamping member A and an elongated rod-like lower clamping member B, the confronting faces wire ,10, 11 respectively of which are modified to form clamping jaws for gripping the electrical conducting wire 12. While the wire holder of the present invention is particularly adapted for supporting overhead trolley wires, other electrical conducting wires may be supported by the holder. The lower clamping member B is preferably formed of copper or bronze so that the collector wheel on the trolley pole may collect the current passing through the wire 12. The upper clamping member A may be formed of brass or any other suitable noncorrosive metal.

Rising from the upper face of the upper clamping member A, in the center thereof is an upstanding knob 13 formed with a central threaded socket 14 adapted to receive and support an insulated hanger 15 to which the suspending guide or wires (not shown) are attached. It will be understood that the aforementioned guide wires have their outer ends attached to the top of supporting poles on the opposite sides of the street, which structure is of the conventional character for supporting overhead trolley wires.

Adjacent each end the upper clamping member A is formed with an upstanding, cylindrical boss C which rises above the upper face thereof. The diameter of the boss C is slightly greater (5 than the width of the clamping members as will be clearly understood by referring to Figure 2 of the drawings. The bosses C and the knob 13 are located along the center of the upper clamping member A so as to add balance to the holder while it is suspended from the conventional lateral guide wires heretofore mentioned.

Each one of the bosses C are constructed in the same manner and it is believed that the following description directed to one of said bosses will give a clear understanding of both. The upper face 16 of each boss is relatively fiat. Extending through the center of each boss is a socket 17 which extends into and terminates in the upper clamping member A. Adjacent the outer end of the socket the same is formed with the restricted mouth 18. In each socket 17 is loosely mounted a bolt 19 the inner end of which is apertured as at 20. The inner end of the bolt 19 terminates above the inner end of the socket 17 when in the assembled relation. The outer end of bolt 19 is threaded as at 21 for a portion of its length and embracing said threaded end of the bolt is a washer 22 that is adapted to rest upon the flat outer face 16 of the boss. The projecting or free ends of bolt 19 has a nut 23 threadably mounted thereon.

Adjacent each end the upper clamping member is formed with a pair of oppositely disposed guide 105 grooves 24 which guide grooves extend up into the opposite sides of the bosses C and the said continuations of said guide grooves terminate below the upper face of the bosses. The upper ends of the pairs of guide grooves 24 communicate and 1( register with the lower portions of the sockets 1'7 in the bosses C.

Adjacent each end the lower clamping member B is formed with pairs of rigid upstanding prongs 26 respectively. The pairs of prongs straddle the lower portion of the upper clamping member A and ride in the pairs of guide grooves 24 terminating in proximity to the inner portion of socket 1?. Each prong of each pair isformed with an opening 28 that alines with the other opening on the other prong of the pair and in the assembled relation as shown particularly in Figure 5 of the drawings there is a cotter pin 27 that extends through the openings in the prongs and the opening 20 in the lower end of the bolts 19.

When it is desired to replace the lower clamping member B, which replacement is found necessary because the trolley collector wheel wears the lower clamping member away, the cotterpin 27 is pulled out whereupon the lower clamping member B may be removed with facility and dispatch. To assemble the parts, the lower clamping member prongs 25 and 26 straddle the wire 12 and slide in the guide grooves 24 until the opening 28 in said pairs of prongs register with the openings 20, in the lower ends of the bolts 19.

If for any reason the openings 28 in the pairs of prongs do not register with openings 20 the bolts 19 may be raised or lowered by manipulating the nuts 23. When the openings are brought into registration the cotter pin 27 is inserted and the upper and lower clamping members are made to grip the electrical conductor wire 12 by tightening the nut 23.

herein, it is to be understood that changes, variations and modifications may be resorted to without departing from the spirit and scope of the claim hereunto appended.

Having described my invention, what I claim as new is:

A wire holder comprising an upper and a lower clamping member formed with jaws between confronting faces for gripping a trolley wire therebetween, an upstanding cylindrical boss on the upper face of the upper clamping member one adjacent each end thereof, an upstanding knob intermediate the end bosses formed with a threaded socket adapted for coupling the holder to an insulated hanger, each of said bosses formed with a central socket and a flat upper face, the opposite sides of said upper clamping member and each boss formed with oppositely disposed surface guide grooves one pair for each boss, the upper ends of said pairs of grooves registering and communicating with the socket in each boss, pairs of upstanding rigid prongs adjacent each end of the lower clamping member straddling the lower portion of the upper clamping member and slidable in the pairs of guide grooves, the upper ends of the pairs of prongs formed with openings registering with the inner portion of the sockets in the bosses, a bolt threaded on its outer end and apertured on its inner end mounted one in each socket, a nut on the threaded end of each bolt bearing on said fiat upper face of each boss, and a pin insertabl'e in the openings in the prongs and the bolts for detachably coupling the upper and lower clamping members together.

ALEXANDER GULLA. 

